Eagle

Eagle 9.2 Negative Solder Mask problem

Upgrading Eagle over 9.2, a new strange thing happens. In the CAM settings, on every soldermask layer, appears a checked box named “Negative image”.

The results are… a borderless soldermask.

Negative option in CAM Settings

Gerbers with borderless soldermask

Normal Gerbers after removing the negative option

Eagle missing managed libraries

After a clean upgrade to Eagle 8.5.2 I couldn’t find the (new) managed libraries.

The user folder in “Documents” is fine with all the work and all the versions inside.

The answer seems to be that you have to re-import them and it makes some sense, but it would be better if it was some link to them in the Control Panel.

The fact that it is no auto-update is the best choice because you may have some file that wouldn’t need the updated library because you strangely placed something on the board.

The quick import procedure follows:

Open Library Manager > go to the Available panel > import by downloading all you need > check that all is fine in the In Use panel > close Library Manager.

Restart Eagle.

CC2541 SensorTag

device under test

A Bluetooth Low Energy Development Kkit for wireless sensor applications.

Useful Links:

TI SensorTag: www.ti.com/sensortag

http://www.ti.com/tool/cc2541dk-sensor

SensorTag Quick Start Guide: http://www.ti.com/litv/pdf/swru324b

SensorTag Software: http://www.ti.com/tool/sensortag-sw

CC2541 SoC: http://www.ti.com/product/cc2541

The power supply section – TPS62730: http://www.ti.com/product/tps62730

The Meandered IFA dimensions can be found on page 4 of the SWRA117D app note.

One unverified Eagle Library here:

[code]
# ioclk.com Opensource Eagle Script
# Eagle > New Library > Execute Script
# Library script
#
# EAGLE Version 6.5.0 Copyright (c) 1988-2013 CadSoft
#
Set Wire_Bend 2;
# Grid changed to ‘mm’ to avoid loss of precision!
Grid mm;
Layer 1 Top;
Layer 16 Bottom;
Layer 17 Pads;
Layer 18 Vias;
Layer 19 Unrouted;
Layer 20 Dimension;
Layer 21 tPlace;
Layer 22 bPlace;
Layer 23 tOrigins;
Layer 24 bOrigins;
Layer 25 tNames;
Layer 26 bNames;
Layer 27 tValues;
Layer 28 bValues;
Layer 29 tStop;
Layer 30 bStop;
Layer 31 tCream;
Layer 32 bCream;
Layer 33 tFinish;
Layer 34 bFinish;
Layer 35 tGlue;
Layer 36 bGlue;
Layer 37 tTest;
Layer 38 bTest;
Layer 39 tKeepout;
Layer 40 bKeepout;
Layer 41 tRestrict;
Layer 42 bRestrict;
Layer 43 vRestrict;
Layer 44 Drills;
Layer 45 Holes;
Layer 46 Milling;
Layer 47 Measures;
Layer 48 Document;
Layer 49 Reference;
Layer 51 tDocu;
Layer 52 bDocu;
Layer 91 Nets;
Layer 92 Busses;
Layer 93 Pins;
Layer 94 Symbols;
Layer 95 Names;
Layer 96 Values;
Layer 97 Info;
Layer 98 Guide;
Description ”;

Edit ‘IOCLK-TI-ANT.sym’;
Layer 94;
Change Style continuous;
Wire 0.254 (0 10.16) (15.24 10.16) (15.24 7.62) (17.78 7.62) \
(17.78 10.16) (20.32 10.16) (20.32 7.62) (22.86 7.62) \
(22.86 10.16) (25.4 10.16) (25.4 5.08);
Layer 94;
Change Size 1.27;
Change Ratio 8;
Change Align bottom left;
Change Font proportional;
Text ‘PCB Antenna’ R0 (12.7 2.54);
Pin ‘GND’ sup none middle R90 both 0 (0 5.08);
Pin ‘FEED’ in none middle R90 both 0 (5.08 5.08);
Layer 94;
Wire 0.254 (30.48 0) (30.48 15.24) (-2.54 15.24) (-2.54 0) \
(30.48 0);

Edit ‘IOCLK-TI-ANT.pac’;
Description ‘\
PCB Small Antenna \n\
– inv.F 2.4 GHz \n\
– according to TI”s SWRA117D, Application Note AN043\n\
– ioclk.com Eagle Library’;
Layer 1;
Rect R0 (0 0) (0.9 4.9);
Layer 1;
Rect R0 (0 4.9) (5 5.4);
Layer 1;
Rect R0 (2.3 0) (2.8 4.9);
Layer 1;
Rect R0 (4.5 2.26) (5 4.9);
Layer 1;
Rect R0 (5 2.26) (7 2.76);
Layer 1;
Rect R0 (7 2.26) (7.5 4.9);
Layer 1;
Rect R0 (7 4.9) (9.7 5.4);
Layer 1;
Rect R0 (9.2 2.26) (9.7 4.9);
Layer 1;
Rect R0 (9.7 2.26) (11.7 2.76);
Layer 1;
Rect R0 (11.7 2.26) (12.2 4.9);
Layer 1;
Rect R0 (11.7 4.9) (14.4 5.4);
Layer 1;
Rect R0 (13.9 0.96) (14.4 4.9);
Layer 21;
Wire 0.127 (-0.5 5.7) (14.7 5.7);
Wire 0.127 (0 0) (-0.5 0) (-0.5 5.7);
Wire 0.127 (14.7 5.7) (14.7 0) (0.1 0);
Layer 1;
Smd ‘GND’ 0.2 0.2 -0 R0 (0.4 0.1);
Layer 1;
Smd ‘FEED’ 0.2 0.2 -0 R0 (2.5 0.1);
Layer 21;
Change Size 0.6096;
Change Ratio 3;
Change Align bottom left;
Text ‘IOCLK – BLE – ANT’ R0 (3.81 1.27);
Layer 21;
Change Size 0.3048;
Change Align bottom left;
Text ‘According to SWRA117D’ R0 (3.81 0.635);
Layer 1;
Smd ‘G’ 1.27 0.635 -0 R90 (0.4 -0.57);
Layer 1;
Smd ‘F’ 1.27 0.635 -0 R90 (2.56 -0.57);

Edit ‘IOCLK-TI-ANT.dev’;
Prefix ”;
Description ‘\
PCB Small Antenna \n\
– inv.F 2.4 GHz \n\
– according to TI”s SWRA117D, Application Note AN043\n\
– ioclk.com Eagle Library’;
Value off;
Add IOCLK-TI-ANT ‘G$1’ next 0 (0 0);
Package ‘IOCLK-TI-ANT’ ”;
Technology ”;
Connect ‘G$1.FEED’ ‘F’ ‘G$1.GND’ ‘G’;
Grid inch;

[/code]